Display screen or a portion thereof with graphical user interface



FIG. 1 is a front view of an image of a display screen or portion thereof with graphical user interface according to a first embodiment thereof; and,

FIG. 2 is a front view of an image of a display screen or portion thereof with graphical user interface according to a second embodiment thereof.

The broken line showings of portions of a display screen, text, and other features in the figures are environmental only and form no part of the claimed design. 

CLAIM The ornamental design for a display screen or portion thereof with graphical user interface, as shown and described. 